Pitman connection for shakers.



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ARCHIE L. PARRISH AND JOHN H. LAMOREUX, OF WILKES-BARRE, PENNSYLVANA.

PETE-AN CONNEGTION FOR SEAMR.

Specification o Letters Patent.

Patented March 9, 1909.

To all whom it may concern:

Be it known that we, Anci-11n and JOHN H. LAMoREUx, citizens of the United States, residing at lVilkes-Barrc, county of Luzerne, and State of Pennsyl vania, have invented a certain new and useful lmproveinent in Pitman Connect-ions for Shakers, of which t-he following is a specilication.

Our invention relates to a new and useful improvement in connecting rods or pitnen ifor all classes of machinery Where a reciprocating motion is to be had from an eccentric crank, and especially adapted for use in connection with coal shakers, and has for its object to so construct such a connecting rod as to provide for the oscillations thereof in following the Inovementsl of the eccentric without the necessity of usinga joint or wrist pin` thereby making the rod more durable, and avoiding the vibrations and wear and tear now incidentto such Inachinery. A

Viith these ends in view, this invention consists in the details otcofnstruction and combination of elements hereinafter set forth and then specifically designated by the claim.

In order 'that those skilled in the art to which this invention appertains may un; derstand how to make andv use. the same, we will describe its construction in detail, re- `ferring by letter to the accompanying drawing forming apart of this specification, in which- Figure l is an elevation of a portion of a shaker showinglr two of our improved connecting rods secured thereto, the outer endsol said rods beinef connected with the ecccntrics ot' the driving' shaft; Fig'. 2, a plan view ot' the same: Fig'. 3, an enlargedside elevation of our improved connecting rod, and Fig. l, a plan view thereof. y

In the drawings it, represents the connecting,r rod or APitman having near its inner end an enlargement B., forming on its opposite sides two pairs of shfoulders.- The shaker has formed or secured on its side lsar, a pair of nieinbers C, which are spaced apart and have opposite recesses in their a/djag cent faces in which enlargement l, or"

L. Panni SH' the pitman is secured, such as by means of bolts, shown in Fie'. 3. rlfhe onter end of the connecting rod is provided with the usual eccentric bearing D and strap Eier attach nient to the eccentric F 'whereby a reciprocating motion is given to the connecting rod and the shaker to which it is attached. To permit the connecting rod to follow the vertical movements of the eccentric the central portion thereof` is cutI away or reduced in thickness as indicated at Gr so as to produce sufiicient flexibility to permit the rod to spring up and down.

One of the particular advantages of a connecting vrod made in accordance with our improvement ist-hat the rod is bolted fast to the shaker, having no movement at this point. and thus no wear or tear can take place, and a. further advantage is that there being no movable connection between the rod and the shaker the machinery may be run at a much higher rate-of speed Without undue vibration. and no lost motion will be created by speeding up the machine, and of course no lubrication will be needed al' the point of connection to the rod and shaft.

Of course we do not wish to be limited in the particular kind of material of which our improved connecting1 (rod may be made as any material used for the purpose may be utilized.

Having thus fully described our invention, what we claim as new and. useful, is'- The combination ot' a pitman having` near its inner end an enlargement forming on its opposite sides twol pairs oiC shoulders a inovably supported shaker, and a pair of members formed or secured on the side bar of said shaker, and spaced apart; said inembers having' opposite recesses in their adjacent faces, and means securing the enlargement of the pitman in said recesses.

In testimony whereof, we have hereunto affixed our signatures in the presence of two 'subscribing witnesses.

ARCl-ll L. PRRSH. JOHN H. LAMOREUX.

Witnesses Lewis M. LARNEDL @Lin l?. HARVEY, Jr. 

